Water can be made fit to drink again.  I'm reminded of the joke that 
says:  What do they make today's coffee with on the space station?  
Yesterday's coffee.

On 6/22/24 06:36, Ryan Petris via PLUG-discuss wrote:
> Can water for agricultural use be reclaimed? Other than it eventually 
> making its way back into the water table?
>
> Water could also be recycled/treated such that it's good for 
> agricultural use but not for consumption, which I imagine would be 
> cheaper than fully reclaiming the water, which could then be used for 
> agriculture rather than fresh water. The extra... lets call them 
> nutrients... that are unsuitable for human consumption may help 
> fertilize the plants as well.
>